6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-14 14:24:05 +00:00
Code Issues Projects Releases Wiki Activity

Rename "ADDO" to "SADDO" and "UADDO". The "UADDO" isn't equivalent to "ADDC"

Browse Source 
because the boolean it returns to indicate an overflow may not be treated like
as a flag. It could be stored to memory, for instance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59780 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2008-11-21 02:12:42 +00:00
parent 7cdc3c8ad2
commit 1c55a9c0cc
4 changed files with 22 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
View File

@ -190,7 +190,8 @@ namespace {
SDValue visitBUILD_VECTOR(SDNode *N);
SDValue visitCONCAT_VECTORS(SDNode *N);
SDValue visitVECTOR_SHUFFLE(SDNode *N);
SDValue visitADDO(SDNode *N);
SDValue visitSADDO(SDNode *N);
SDValue visitUADDO(SDNode *N);
SDValue XformToShuffleWithZero(SDNode *N);
SDValue ReassociateOps(unsigned Opc, SDValue LHS, SDValue RHS);
@ -728,7 +729,8 @@ SDValue DAGCombiner::visit(SDNode *N) {
case ISD::BUILD_VECTOR: return visitBUILD_VECTOR(N);
case ISD::CONCAT_VECTORS: return visitCONCAT_VECTORS(N);
case ISD::VECTOR_SHUFFLE: return visitVECTOR_SHUFFLE(N);
case ISD::ADDO: return visitADDO(N);
case ISD::SADDO: return visitSADDO(N);
case ISD::UADDO: return visitUADDO(N);
}
return SDValue();
}
@ -5145,7 +5147,7 @@ SDValue DAGCombiner::visitVECTOR_SHUFFLE(SDNode *N) {
return SDValue();
}
SDValue DAGCombiner::visitADDO(SDNode *N) {
SDValue DAGCombiner::visitSADDO(SDNode *N) {
SDValue Chain = N->getOperand(2);
SDValue LHS = N->getOperand(0);
SDValue RHS = N->getOperand(1);
@ -5173,6 +5175,10 @@ SDValue DAGCombiner::visitADDO(SDNode *N) {
return SDValue(N, 0);
}
SDValue DAGCombiner::visitUADDO(SDNode *N) {
return SDValue();
}
/// XformToShuffleWithZero - Returns a vector_shuffle if it able to transform
/// an AND to a vector_shuffle with the destination vector and a zero vector.
/// e.g. AND V, <0xffffffff, 0, 0xffffffff, 0>. ==>